@inproceedings{PC2009MidpointSubdivision,
  Author = {Hartmut Prautzsch and Qi Chen},
  Title = {Analyzing Midpoint Subdivision},
  Booktitle = {arXiv},
  Month = nov,
  Year = {2009},
  Ee = {http://arxiv.org/abs/0911.5157}
}